JPS601421A - Foil journal bearing - Google Patents
Foil journal bearingInfo
- Publication number
- JPS601421A JPS601421A JP10581483A JP10581483A JPS601421A JP S601421 A JPS601421 A JP S601421A JP 10581483 A JP10581483 A JP 10581483A JP 10581483 A JP10581483 A JP 10581483A JP S601421 A JPS601421 A JP S601421A
- Authority
- JP
- Japan
- Prior art keywords
- foil
- cylindrical
- cylindrical body
- journal bearing
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
- F16C17/024—Sliding-contact bearings for exclusively rotary movement for radial load only with flexible leaves to create hydrodynamic wedge, e.g. radial foil bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Support Of The Bearing (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、動圧形ジャーナル軸垂に係シ、特に高速小負
荷の軸系に好適なフォイルジャーナル軸受に関す、るも
のである。 。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a hydrodynamic journal shaft bearing, and particularly to a foil journal bearing suitable for a high-speed, small-load shaft system. .
〔発明、の背景〕 。[Background of the invention].
７般にフォイルジャーナル軸受は構造が簡単で、かつ軸
受損失が小さいので、高速小屋回転機械に広く使用され
ているが、フォイル軸受ブツシュへの取付けは構造を容
易にするため、フォイルを直接軸受ブツシュに溶接する
か、軸受ブツシュにキー溝を穿ち、キーに溶接したフォ
イルをキー溝に嵌合するようにしたものが多い。このた
め、溶接時の熱によシ溶接部付近のフォイルが脆質化し
、繰返し荷重による疲労破壊が生じ易い欠点があった。In general, foil journal bearings have a simple structure and low bearing loss, so they are widely used in high-speed rotary machinery. In many cases, the bearing bushing is welded to the bearing bushing, or a keyway is bored in the bearing bushing, and a foil welded to the key is fitted into the keyway. For this reason, the foil near the welded part becomes brittle due to the heat generated during welding, and there is a drawback that fatigue fracture is likely to occur due to repeated loads.
また、軸受ブツシュに部分円弧の溝を設け、この溝にフ
ォイルを埋設するものもあるが、この構造では溝内がフ
ォイルが回転し得るため、フォイル自身の回動によりフ
ォイルのはね剛性が減じられ負荷能力が減少するという
欠点があった。In addition, some bearing bushings are provided with a partial arc groove and a foil is embedded in this groove, but with this structure, the foil can rotate within the groove, so the rotation of the foil itself reduces the spring stiffness of the foil. The disadvantage was that the load capacity was reduced.
従って、本発明の目的とするところはフォイルの軸受ブ
ツシュへの取付けが容易で負荷能力が大きく、かつ変動
応力による疲労破壊が生じにくいフォイルジャーナル軸
受を提供することにある。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a foil journal bearing that allows easy attachment of the foil to the bearing bushing, has a large load capacity, and is less prone to fatigue failure due to fluctuating stress.
本発明は周方向に設けた複数の切欠き部を突出部とを互
いに嵌合させて円筒体を構成する一対の円筒部材を設け
、この円筒部材の突出部に折り曲げてフォイルを巻着し
、フォイルの端部な円筒体の内面に沿って突出延在させ
て構成したもので、フォイルは円筒部材に巻着するだけ
で取付けが可能であり、しかも溶接部分を含まないので
、繰返し荷重による疲労破壊の改善ができる等の技術的
手段を講じたものである。The present invention provides a pair of cylindrical members that constitute a cylindrical body by fitting a plurality of notches provided in the circumferential direction with a protruding part, and bending and wrapping a foil around the protruding part of this cylindrical member, The foil is constructed by protruding and extending along the inner surface of the cylindrical body at the end of the foil.The foil can be attached by simply wrapping it around the cylindrical member, and since it does not include welded parts, it is free from fatigue due to repeated loads. Technical measures have been taken to improve destruction.
第１図、第２図は本発明の第１の実施例を示すものであ
る。1 and 2 show a first embodiment of the present invention.
図においで、１，２は互いに嵌合して円筒体（軸受ブツ
シュ）を構成する円筒部材で、それぞれの周方向にはｖ
Ｌ数の切欠き部１ａ、２ａと突出部１ｂ、２ｂが設けら
れている。円筒部材１，２は切欠き部１ａと突出部２ｂ
及びｌｂと２ａとの嵌合により円筒棒金構成する。３は
フォイルで、円筒部材１，２の突出部、例えば２ｂに折
シ曲げて巻着され、その端部３ａ、３ｂは円筒体内面に
沿って突出延在され配置される。第２図は円筒部材の嵌
合状態を示したものである。図で、４，５は円筒部材１
．２を互いに嵌合して円筒体を構成し、それをピン、ボ
ルト等の固定するための貫通孔である。In the figure, 1 and 2 are cylindrical members that fit together to form a cylindrical body (bearing bush), and each has a v
L number of notches 1a, 2a and protrusions 1b, 2b are provided. The cylindrical members 1 and 2 have a notch 1a and a protrusion 2b.
A cylindrical metal bar is constructed by fitting lb and 2a. Reference numeral 3 denotes a foil, which is bent and wrapped around the protruding portions of the cylindrical members 1 and 2, for example 2b, and its ends 3a and 3b are arranged to protrude and extend along the inner surface of the cylindrical members. FIG. 2 shows the fitted state of the cylindrical members. In the figure, 4 and 5 are cylindrical members 1
．． 2 are fitted together to form a cylindrical body, and this is a through hole for fixing the cylindrical body with pins, bolts, etc.
本発明の上記実施例は上記のように構成されているので
、フォイル３は円筒部材の突出部１ｂあるいは２ｂに巻
着するだけでよいので、円筒体への取付けが容易である
とともに折シ曲げ加工でおり、溶接を施さないので、熱
による材質変化を起すことなく、繰返し応力による疲労
破壊も生じにくくなる。また、円筒体内面に沿ってフォ
イル端部を互いに重ね合せて配置することによシ、フォ
イル相互間のクーロン摩擦による制振作用を得ることが
できる。Since the above-described embodiment of the present invention is constructed as described above, the foil 3 only needs to be wrapped around the protruding portion 1b or 2b of the cylindrical member, so that it is easy to attach it to the cylindrical member, and it can be folded and folded. Since it is processed and no welding is performed, there is no material change due to heat, and fatigue failure due to repeated stress is less likely to occur. Further, by arranging the foil ends so as to overlap each other along the inner surface of the cylindrical body, a damping effect due to Coulomb friction between the foils can be obtained.
第３図は本発明の第２の実施例を示すものである。FIG. 3 shows a second embodiment of the invention.
フォイル３を巻着する突出部１ｂまたは２ｂの外径をフ
ォイル厚さ分以上に小さく形成したものである。このよ
うに構成することによシ、円筒体の軸受装置等の機器に
組込む際の取付けが容易になると共に取付時のフォイル
の破壊を防ぐことができる。The outer diameter of the protrusion 1b or 2b around which the foil 3 is wound is made smaller than the thickness of the foil. By configuring it in this way, it becomes easy to install it into equipment such as a cylindrical bearing device, and it is possible to prevent the foil from being destroyed during installation.
第４図、第５図は本発明の第３の実施例を示すものであ
る。4 and 5 show a third embodiment of the present invention.
フォイル３を巻着する突出部１ｂｔたは２ｂの内径をフ
ォイル厚さ分以上に大きく形成したものである。このよ
うに構成することによシ、フォイル３が円筒体の側面よ
りはみ出るのを防ぐ効果を得る。The inner diameter of the protrusion 1bt or 2b around which the foil 3 is wound is made larger than the thickness of the foil. This configuration provides the effect of preventing the foil 3 from protruding from the side surface of the cylindrical body.
第６図は本発明の第４実施例を示すものである。FIG. 6 shows a fourth embodiment of the present invention.
円筒体内面に沿って互いに重ね合せたフォイル端部３ａ
、３ｂの円筒部材側に凹凸部３Ｃが構成されている。Foil ends 3a overlapped with each other along the inner surface of the cylinder
, 3b are provided with an uneven portion 3C on the cylindrical member side.
このように構成することにより、重ね合せるフォイル端
部３ａ、３ｂは互いに接触し、接触面でクーロン摩擦を
生じ、さらに制振効果を増すとともに、そのばね剛性に
より軸受負荷能力を高めることができる。With this configuration, the overlapping foil ends 3a and 3b come into contact with each other, producing Coulomb friction on the contact surfaces, further increasing the vibration damping effect and increasing the bearing load capacity due to its spring rigidity.
第７図は本発明の第５の実施例を示すものである。FIG. 7 shows a fifth embodiment of the present invention.
フォイルの端部３ａ、３ｂは円筒体内面に沿って互いに
重ね合せ、重ね合された円筒部材１，２側のフォイル端
３ａには凹凸部３Ｃが形成され、フォイル端３ｂ部の方
向に向かって順次大きくなるように形成されている。The ends 3a and 3b of the foil are overlapped with each other along the inner surface of the cylindrical body, and an uneven part 3C is formed on the foil end 3a on the side of the overlapped cylindrical members 1 and 2, and the uneven part 3C is formed in the direction of the foil end 3b. It is formed so that it becomes larger sequentially.
このように構成することによって周方向のばね剛性が均
一化される効果がある。This configuration has the effect of making the spring rigidity uniform in the circumferential direction.
以上説明したように、本発明は周方向に設けた複数の切
欠き部と突出部とを互いに嵌合させて円筒体を構成する
一体の円筒部材を設け、この突出部に折シ曲げてフォイ
ルを巻着し、またフォイル端部を円筒体の内面に沿って
突出延在させるようにしたので、フォイルの取付は及び
保持が容易になシ、変動応力によるフォイルの疲労破壊
が起きにくく、また負荷能力の向上をはかることができ
る。As explained above, the present invention provides an integral cylindrical member that constitutes a cylindrical body by fitting together a plurality of notches provided in the circumferential direction and a protrusion, and folds the foil into the protrusion. Since the foil end is made to protrude and extend along the inner surface of the cylindrical body, the foil is easy to install and hold, and fatigue failure of the foil due to fluctuating stress is less likely to occur. Load capacity can be improved.
第１図、第２図は本発明の第１の実施例で、第１図はそ
の分解斜視図、第２図はその組立断面正面図、第３図は
杏発明の第２の実施例の組立断面正面図、第４図、第５
図は本発明の第３の実施例で、第４図はその組立断面正
面図、第５図は第４図の要部拡大図、第６図は本発明の
第４の実施例の組立断面正面図、第７図は本発明の第５
の実施例の組立断面正面図である。
１．２・・・円筒部材、３・・・フォイル、３ａ、３ｂ
・・・第 １ 図
笥 ２ 図
第 ５ 口 第 ４ 同
第 ５ 図
３ユ1 and 2 show a first embodiment of the present invention, FIG. 1 is an exploded perspective view thereof, FIG. 2 is an assembled sectional front view thereof, and FIG. 3 is a second embodiment of the invention. Assembly cross-sectional front view, Figures 4 and 5
The figure shows a third embodiment of the present invention, FIG. 4 is an assembled cross-sectional front view thereof, FIG. 5 is an enlarged view of the main part of FIG. 4, and FIG. 6 is an assembled cross-section of the fourth embodiment of the present invention. The front view, FIG. 7, is the fifth embodiment of the present invention.
FIG. 3 is an assembled cross-sectional front view of the embodiment. 1.2...Cylindrical member, 3...Foil, 3a, 3b
・・・Figure 1 Box 2 Figure 5 Entrance 4 Figure 5 Figure 3 U
Claims (1)
設け、前記円筒部材の前記突出部にフォイルを折９曲け
て巻着し、前記フォイルの端部を前記円筒体の内面に沿
って突出延在させ、て構成したことを特徴とするフォイ
ルジャーナル軸受。 ２、前記フォイルを巻着した前記突出部外径は前記フォ
イルの厚さ分以上に小さく形成してな 。 ることを特徴とする特許請求の範囲第１項記載のフォイ
ルジャーナル軸受。 ３、前記フォイル端部が突出延在する部分の前記円筒体
の内径は前記フォイル厚さ分以上に大きく形成したこと
を特徴とする特許請求の範囲第１項または第２項記載の
フォイルジャーナル軸受。 ４、前記円筒体の内面に沿って突出延在させる前記フォ
イル端部は互いに重ね合せて配置させてい、、ることを
特徴とする特許請求の範囲第１項ない、Ｑ第３項のいず
れかに記載のフォイルジャーナル軸受。 ５、互いに重ね合せた前記フォイル端部の前記円筒体側
は、凹凸部が形成されていることを特徴とする。、、特
許請求の範囲第４項記載のフォイルジャーナル軸受。
。 ６、前記フ、オイ、ルの凹凸部は重ね合せる他方の前部
フ、オ、イルの端部方向に順次太きく形成されている。 こを特徴とする特許請求の範囲第５項記載のフォイルジ
ャーナル軸受。[Claims] 1. A plurality of notches and protrusions provided in the circumferential direction. A pair of cylindrical members are provided that are fitted together to form a cylindrical body, a foil is folded and wrapped nine times around the protrusion of the cylindrical member, and the end of the foil is wrapped along the inner surface of the cylindrical body. A foil journal bearing characterized in that it has a protruding and extending structure. 2. The outer diameter of the protrusion around which the foil is wrapped is smaller than the thickness of the foil. A foil journal bearing according to claim 1, characterized in that: 3. The foil journal bearing according to claim 1 or 2, wherein the inner diameter of the cylindrical body at the portion where the foil end protrudes is larger than the thickness of the foil. . 4. The foil end portions that protrude and extend along the inner surface of the cylindrical body are arranged so as to be overlapped with each other. Foil journal bearings as described in . 5. An uneven portion is formed on the cylindrical body side of the end portions of the foils that are overlapped with each other. . . A foil journal bearing according to claim 4.
. 6. The concave and convex portions of the above-mentioned F, O, and L are formed to become thicker in the direction of the end of the other overlapping front F, O, and I. A foil journal bearing according to claim 5, characterized by this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10581483A JPS601421A (en) | 1983-06-15 | 1983-06-15 | Foil journal bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10581483A JPS601421A (en) | 1983-06-15 | 1983-06-15 | Foil journal bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS601421A true JPS601421A (en) | 1985-01-07 |
Family
ID=14417552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10581483A Pending JPS601421A (en) | 1983-06-15 | 1983-06-15 | Foil journal bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS601421A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6359460A (en) * | 1986-08-22 | 1988-03-15 | ユニチカ株式会社 | Production of base cloth for simulated leather |
| US5032028A (en) * | 1988-09-20 | 1991-07-16 | Abg Semca S.A. | Fluid film bearing |
-
1983
- 1983-06-15 JP JP10581483A patent/JPS601421A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6359460A (en) * | 1986-08-22 | 1988-03-15 | ユニチカ株式会社 | Production of base cloth for simulated leather |
| US5032028A (en) * | 1988-09-20 | 1991-07-16 | Abg Semca S.A. | Fluid film bearing |
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